The Geometric Average Return of 8,12,2,and 16 Per Cent Is $\times$

The geometric average return of 8,12,2,and 16 per cent is computed as:

A) (1.08 + 1.12 + 1.02 + 1.16) ^1/2 - 1
B) (1.08 + 1.12 + 1.02 + 1.16) ^1/4
C) (1.08 $\times$ 1.12 $\times$ 1.0 $\times$ 1.16) $\times$ 4 - 1
D) (1.08 + 1.12 + 1.02 + 1.16) $\times$ 1/2
E) (1.08 $\times$ 1.12 $\times$ 1.02 $\times$ 1.16) ^1/4 - 1